Smeltery

m = peripheral.wrap("left")
m.open(504)
while true do
  event = { os.pullEvent("modem_message") }
  for i = 1, tonumber(event[5]) do
    if i%3 == 1 then
      rs.setOutput("front",true)
      os.sleep(0.5)
      rs.setOutput("front",false)
    elseif i%3 == 2 then
      rs.setOutput("bottom",true)
      os.sleep(0.5)
      rs.setOutput("bottom",false)
    elseif i%3 == 0 then
      rs.setOutput("back",true)
      os.sleep(0.5)
      rs.setOutput("back",false)
      os.sleep(13.5)
    end
  end
end